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US 6,971,553 B2Granted
Pump for dispensing flowable material
OwnerJames William Brennan, Peter Russell Brewerinventors
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Abstract
The invention relates to a dispensing device which can be used to dispense a metered volume of a flowable material such as a liquid, gel or paste product from a reservoir. The invention provides a pump for dispensing a flowable material from a container, the pump including a pump body which is deformable between a rest configuration and a squeezed configuration, the internal capacity of the pump body being substantially reduced in the squeezed configuration compared to the rest configuration.
Claims18
A pump for dispensing a flowable material from a container, said pump including:
- a flexible walled pump body moulded from a resilient material and deformable between a rest configuration and a squeezed configuration, said pump body defining a pump chamber, the internal capacity of the pump chamber being substantially reduced in the squeezed configuration compared to the rest configuration;
- a unidirectional valve to allow ingress of said flowable material into said pump chamber from said container;
- an outlet to allow egress of said flowable material from said pump chamber;
- a sealing member located inside the pump chamber which acts to seal the outlet of the pump chamber, said sealing member mounted for translational movement between a first, sealing position and a second, non-sealing position;
- a biasing means which acts to bias the sealing member to said first position whereby the sealing member seals the outlet of the pump chamber;
- wherein application of a dispensing force to said pump body causes translational movement of said sealing member from said first position to said second position to permit said flowable material to flow through said outlet.
3 more elements
Dependencies are inferred from the claim text.